The actions of a quick thinking cyber security expert may have saved untold thousands of computers around the world from infection from the ransomware known as "WannaCry", a form of malware that crippled hundreds of thousands of computer systems around the world when it was launched on Friday. Cyber-security experts are warning that the attack could rear its ugly head once again, and Microsoft has issued a stern warning against nation-state spy agencies that would hoard such computer vulnerabilities, rather than reporting them to the appropriate vendors so that they can be rectified, rather than being turned into crippling weapons of mass extortion.
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